Nut-lock



(No Model.)

S. M. CUNNINGHAM & J. B. PEPPIN.

NUT LOCK.

Patented July 19, 1887.

Lil

UNITED STATES J AT NT OFFICE.

SAMUEL M. CUNNINGHAM AND JOHN B. PEPPIN, OF COYOTE, CALIFORNIA.

NUT-LOCK.

SPECIFICATIQN forming part of Letters Patent No. 366,765, dated July 19. 1887.

Application filed February '15, 1367. Serial No. 229,115. (No model.)

To aZZ whom it may concern.-

Be it known that we, SAMUEL M. CUNNING- HAM and JOHN B. PEPPIN, of Coyote, Santa Clara county, State of California, have invented an Improvement in Nut-Locks; and we hereby declare the following to beafull, clear, and exact description of the same.

Our invention relates to the class of nutlocks; and it consists in the combinations and constructions we shall hereinafter fully describe and claim.

The object of our invention is to provide a simple and effective nut-lock adapted to be readily applied and to be as easily removed when necessary.

Though our nut-lock may be applied to the nuts of any device or mechanism, it is espe cially adapted for use in looking the nuts which secure the bolts used to fasten the fish-plates connecting the adjacent ends of railway-rails, and in this connection we prefer to show it.

Referring to the accompanying drawings for a more complete explanation of our invention, Figure 1 is a horizontal section of the rails on the. line X X, Fig. 2, showing a plan of the nutlock in position. Fig. 2 is a side elevation.

A is one rail, and A the other, the joint between their ends beingspanned by thefish-plate B,secured by thebolls O and nuts D. E is abar or tie having bearing-shoulders e, here shown as four in number, in order to lock the usual four nuts, D. The outermost shoulder" is formed by the L-shaped portion 0, which,with the bar itself, forms a three-sided rectangular socket embracing the nut. The next shout der is formed by the straight portion 6 which simply bears againstthenut. Thenextshoulder is formed by one side of the offset portion 6, and it bears also against the nut, and the fourth shoulder is formed by the other end or side of the offset portion 6, which does not bear against its nut, but is separated there from, whereby a seat or socket, f, is formed between it and the nut for the reception of the key F. This last-named shoulder is beveled inwardly, and the key F is likewise beveled,

and is also made tapering or wedge shape, so that when the key is inserted it wedges itself to place, bearing between the nut on the one side and the shoulder on the other, whereby the nut is held, and the bar or tie subjected to such pressure as to bind all its other shoulders against their respective nuts, thus locking the whole series at one operation. The beveled shape of the key and its seat prevents the former from getting out of place.

The nearer end of the bar or tie is made to receive one of the bolts which passes through it, so that there is no tendency of the bar or tie to rise or otherwise move from its position. The rectangular socket at the other end of the bar or tie serves a similar purpose for that end, and therefore the whole bar is firmly seated and held in place.

In the offset portion 0 of the bar or tie is made an elongated horizontal slot, 0, having an enlarged end, 6 the whole resembling a key-hole. To thelower end oft-he key or wedge F is attached (or it may be formed with it as one piece) a link,f, the other end of which has a cross-head, f This cross-head when in a horizontal position is adapted to readily pass through the elongated slot 0, and then by moving it along until the enlarged end 6 is reached the neck of the crosshead finds room enough to play, and the link may thcnbe turned down, the cross-head thereupon turning at right angles and securing the link to the bar or tie, though said link has a movement on its pivotal center, whereby the key F may be adjusted to its seat or socket and removed therefrom. Upon the head of thckey Fis a lug, f, for the purpose of receiving a blow, delivered when necessary to knock the key out of its seat.

It will be seen that the lock can be readily adjusted, and when in place will not be affected by any jar, but will hold itself to position and keep the nuts from moving. When the lock has to be released, the key is simply driven up froniits seat,the:ad j acent nutserewed off, and the bar or tie can then be removed.

Having thus described our invention, what we claim as new, and desire to secure by Let ters Patent, is

1. A nut-lock comprising a bar fitted on the bolt and having a shoulder adjacent to the nut, and a key or wedge pivoted to the bar and driven into the space or seat between the shoulder on the bar and the adjacent side of the nut, substantially as herein described.

2. A nut-lock comprising the bar E, fitted on the bolt and having an offset, 0, provided fitted at one end on one bolt and having the ofl'set portion- 6 the straight piece 6 and the 1 L-shaped piece 0, all forming the shoulders e,

fitted and hearing, as described, and the Wedge or key F, connected with and pivoted to the bar or tie and seated in the space between the hub of the bolt over which the bar is fitted r 5 and the adjacent shoulder, substantially as herein described.

In witness whereof We have hereunto set our hands.

SAML. M. GUN N INGHAM. JOHN B. PEPPIN. Witnesses:

GEORGE E. ORM, ERWIN FRosTL 

